Table 3.

Estimated effects of change in medication and number of paired glucose tests on A_1c level and instantaneous linear change in A_1c at baseline and at 3 and 6 months.

Predictor		Estimated effect on A1c levela			Estimated effect on the instantaneous linear change rate in A1c
		MLEb	t-ratio (df)c	P	MLEb	t-ratio (df)c	P
Medication change
	3 months	–1.05	–3.42 (157)	<.001	0.35	1.81 (157)	.07
	6 months	–0.71	–3.37 (157)	<.001	0.35	1.81 (157)	.07
Number of paired tests
	3 months	–0.007	–0.99 (156)	.33	–0.008	–1.82 (156)	.07
	6 months	–0.015	–1.86 (156)	.06	–0.008	–1.82 (156)	.07

^a Models were estimated in a hierarchical fashion.

^b MLE: maximum-likelihood estimate.

^c t-ratios are ratios of the estimates to their respective standard errors.